add huggingface model (#2624)

### What problem does this PR solve?

#2469

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

---------

Co-authored-by: Kevin Hu <kevinhu.sh@gmail.com>

rag/llm/__init__.py

@@ -18,7 +18,7 @@ from .chat_model import *
 from .cv_model import *
 from .rerank_model import *
 from .sequence2txt_model import *
-from .tts_model import * 
+from .tts_model import *
 
 EmbeddingModel = {
     "Ollama": OllamaEmbed,
@@ -46,7 +46,8 @@ EmbeddingModel = {
     "SILICONFLOW": SILICONFLOWEmbed,
     "Replicate": ReplicateEmbed,
     "BaiduYiyan": BaiduYiyanEmbed,
-    "Voyage AI": VoyageEmbed
+    "Voyage AI": VoyageEmbed,
+    "HuggingFace":HuggingFaceEmbed,
 }